Moistening thimble



FIG. 1 is a front perspective view of a moistening thimble showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view, with the right side being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The right side elevation view, not shown, is a mirror image of the left side elevation view.

The broken lines depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a moistening thimble, as shown and described. 